PLATE 3 
EXPLANATION OF FIGURES 
41-48 All figures from cells fixed in acetic-alcohol and stained in iron hema- 
toxylin and Bordeaux red. 
41, 42, 47 Sectioned eggs. 
43, 44, 45, 46 Whole eggs shown in optical section. 
48 A mature spermatozoon with refractive body intact. 
456 
